/* ===================================================================
   CARTEX コラム — column.css (app.cssのトークンを流用)
=================================================================== */
body{background:var(--paper);}

.column-header{background:var(--brand); color:var(--brand-ink); position:sticky; top:0; z-index:10;}
.column-header-inner{
  max-width:760px; margin:0 auto; padding:14px 20px; display:flex; align-items:center; justify-content:space-between; gap:12px;
}
.column-brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:inherit;}
.column-brand .brand-mark{width:32px; height:32px; border-radius:9px; background:var(--accent); display:flex; align-items:center; justify-content:center; flex-shrink:0;}
.column-brand .brand-mark svg{width:17px; height:17px;}
.column-brand .brand-text{display:flex; flex-direction:column; line-height:1.2;}
.column-brand .mark{font-weight:800; font-size:15px; color:#fff;}
.column-brand .sub{font-size:10px; font-weight:700; color:rgba(255,255,255,.65);}
.column-header-cta{
  flex-shrink:0; background:var(--accent); color:var(--accent-ink); text-decoration:none;
  font-size:12.5px; font-weight:800; padding:9px 16px; border-radius:999px; white-space:nowrap;
}
.column-header-cta:hover{background:var(--accent-hover);}

.column-main{max-width:760px; margin:0 auto; padding:32px 20px 64px;}

/* 一覧 -------------------------------------------------------------- */
.column-intro{margin-bottom:28px;}
.column-intro h1{font-size:26px; font-weight:800; color:var(--ink); margin:0 0 8px; letter-spacing:-.01em;}
.column-intro p{font-size:14px; color:var(--ink-soft); margin:0;}
.column-list{display:flex; flex-direction:column; gap:14px;}
.column-empty-list{color:var(--steel); font-size:13px;}
.column-card{
  display:block; text-decoration:none; color:inherit; background:var(--surface);
  border:1px solid var(--line); border-radius:16px; padding:20px; box-shadow:var(--shadow-card);
  transition:transform .12s ease, box-shadow .12s ease;
}
.column-card:hover{transform:translateY(-1px);}
.column-card-category{display:inline-block; font-size:11px; font-weight:800; letter-spacing:.04em; text-transform:uppercase; color:var(--accent-hover); margin-bottom:8px;}
.column-card-title{font-size:18px; font-weight:800; color:var(--ink); margin:0 0 8px; line-height:1.5;}
.column-card-excerpt{font-size:13.5px; color:var(--ink-soft); line-height:1.7; margin:0 0 12px;}
.column-card-date{font-size:11.5px; color:var(--steel); font-weight:600;}

/* 記事詳細 ------------------------------------------------------------ */
.column-breadcrumb{display:flex; align-items:center; gap:6px; font-size:12px; color:var(--steel); margin-bottom:16px;}
.column-breadcrumb a{color:var(--ink-soft); text-decoration:none;}
.column-breadcrumb a:hover{text-decoration:underline;}
.column-article-category{display:inline-block; font-size:11.5px; font-weight:800; letter-spacing:.04em; text-transform:uppercase; color:var(--accent-hover); margin:0 0 10px;}
.column-article-title{font-size:26px; line-height:1.5; font-weight:800; color:var(--ink); margin:0 0 10px; letter-spacing:-.01em; text-wrap:balance;}
.column-article-date{font-size:12.5px; color:var(--steel); font-weight:600; margin:0 0 28px; padding-bottom:20px; border-bottom:1px solid var(--line);}

.column-article-body{font-size:15.5px; line-height:1.95; color:var(--ink);}
.column-article-body p{margin:0 0 20px;}
.column-article-body h2{font-size:19px; font-weight:800; color:var(--ink); margin:36px 0 14px; letter-spacing:-.005em;}
.column-article-body ul{margin:0 0 20px; padding-left:22px; display:flex; flex-direction:column; gap:8px;}
.column-article-body li{line-height:1.8;}
.article-note{
  margin:24px 0; padding:14px 16px; background:var(--surface-2); border:1px solid var(--line);
  border-left:3px solid var(--steel); border-radius:10px; font-size:13px; color:var(--ink-soft); line-height:1.8;
}

.column-cta{margin:40px 0 24px; padding:24px; background:var(--surface); border:1px solid var(--line); border-radius:16px; text-align:center;}
.column-cta p{margin:0 0 14px; font-size:13.5px; color:var(--ink-soft);}
.column-cta-btn{
  display:inline-flex; align-items:center; gap:6px; background:var(--accent); color:var(--accent-ink);
  text-decoration:none; font-size:14px; font-weight:800; padding:13px 24px; border-radius:999px;
}
.column-cta-btn:hover{background:var(--accent-hover);}

.column-tags{display:flex; flex-wrap:wrap; gap:8px;}
.column-tag{font-size:12px; font-weight:700; color:var(--ink-soft); background:var(--surface-2); border:1px solid var(--line); border-radius:999px; padding:5px 12px;}

.column-empty{text-align:center; padding:60px 20px;}
.column-empty h1{font-size:22px; font-weight:800; color:var(--ink); margin:0 0 10px;}
.column-empty p{font-size:14px; color:var(--ink-soft); margin:0 0 22px;}

@media (min-width: 640px){
  .column-article-title{font-size:30px;}
  .column-article-body{font-size:16.5px;}
}